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General Questions /

General questions about getting started with SilverStripe that don't fit in any of the categories above.

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Simple Question on Php


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4 Posts   1668 Views

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tfliam

Community Member, 20 Posts

13 October 2011 at 8:55pm

Hi, I am doing a tutorial 2, for the code below:

return ($news) ? DataObject::get("ArticlePage", "ParentID = $news->ID", "Date DESC", "", $num) : false;

What do the symbol '?' and ':' means? Thanks.

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Invader_Zim

Community Member, 141 Posts

13 October 2011 at 9:31pm

I think it's called a ternary operator or conditional operator...

Read more about it here (scroll down a bit):
http://www.php.net/manual/en/language.operators.comparison.php

or in this blog post:
http://davidwalsh.name/javascript-shorthand-if-else-examples

Cheers

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dendeffe

Community Member, 135 Posts

13 October 2011 at 11:30pm

The :: allows you to use the function of the DataObject class without instantiating an actual object from it.

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tfliam

Community Member, 20 Posts

14 October 2011 at 3:01pm

Thanks guys, tat explain very well!